You shut up or I shut your mouth for you.
5 seconds sound clip from the Sleeping Fist (1979) movie soundboard.
You can hear this line at 00:45:54 in the DVD version of the movie.
Quote context
[...]
- Yeah, the kid said you were here. Thought I'd drop by.
- Don't be stupid. Why not come out with it? Tell her you miss her.
- You shut up or I shut your mouth for you.
- Temper! If you dare try it, she won't like you.
- You!
- I? I what? I can see when I'm not wanted. I'm leaving.
- He's a kid. He's still young. He likes teasing.
- Manager!
- Yes, sir, coming, coming. Yes, yes, sir.
[...]